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Include paths

Posted on 1998-06-05
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Last Modified: 2013-11-18
I'm using g++ to compile OpenGL apps, but because our system doesn't have GL I had to compile and install it into my user directory. The problem is that although the -L option works OK for the libs, I can't specify the path to the include files which need to be called as <Xm/Xm.h> or <GL/gl.h> in the code to be portable to my home linux system.

I've tried doing "-Ipath" and "-I- -Ipath" in the Makefile as it says on the man page for g++, but the compiler still can't find the includes.

Thansk for any help,
James
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Question by:jhubbard
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laeuchli earned 300 total points
ID: 1165285
Hi, James. I think I can help if you post what your includes path is. Bye.
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by:alexo
ID: 1165286
>> I can't specify the path to the include files which need to be called as <Xm/Xm.h> or <GL/gl.h> in the code [...]

You have to set your include path to one directory above the Xm.h and gh.l files.  You also may need to use multiple include paths, e.g., /foo/bar;/googoo/gigi;/and/another/one.

laeuchli, locking the question before providing a valid answer is EXTREMELY bad form and usually results in complaints to EE administration.
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by:laeuchli
ID: 1165287
Sorry, but I thought it was a good practice. I have seen many experts do it so I thought it was ok. Well sorry.
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Expert Comment

by:alexo
ID: 1165288
>> I have seen many experts do it so I thought it was ok.
Not really.  Most of the experts that lock a question before providing an answer follow up with a really long and detailed explanation in a comment after 5-15 minutes (which is the time that takes them to type it in an organized way).

jhubbard, I don't know what the behavior of the "-I" argument of your compiler is but I guess it is cumulative.  In that case try: "-I<path-to-GL> -I<path-to-Xm> ..."
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Author Comment

by:jhubbard
ID: 1165289
Thanks, I just found out that this system actually has OpenGL, but hidden in some obscure and arbitrary directory. You'd think experienced sysops could organise where to put libraries, but noooo......

Oh well, thanks anyway.
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Expert Comment

by:alexo
ID: 1165290
You could have gotten your points back (since you found the answer yourself).  Too late now...
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